.f-row {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;
    position: relative;
}

.f-column {
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-direction: normal;
    -webkit-box-orient: vertical;
    -webkit-flex-direction: column;
    -moz-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
    position: relative;
}

.f-full {
    -webkit-box-flex: 1 1 auto;
    -ms-flex: 1 1 auto;
    flex: 1 1 auto;
}

.f-noshrink {
    -webkit-flex-shrink: 0;
    -moz-flex-shrink: 0;
    -ms-flex-negative: 0;
    flex-shrink: 0;
}

.f-content-center {
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    -moz-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    -moz-align-items: center;
    align-items: center;
}

.f-vcenter {
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    -moz-align-items: center;
    align-items: center;
}
